[CMake] How to pass a configuration file to CMake?

[Xavier Besseron]

Hi Cedric,

I believe you should do it this way:

Your config.cmake file should be:

set(ENABLE_DOWNLOAD True CACHE BOOL "")
set(GCC_ROOT "/local/cdoucet/gcc/4.9.2/" CACHE PATH "")



In the signature of set() for "Set Cache Entry", the *docstring* is
mandatory.
cf https://cmake.org/cmake/help/v3.4/command/set.html#set-cache-entry


And you forgot the path to your source directory in your CMake command line
:

cmake -C ../config.cmake /path/to/your/source




I hope this helps!

Xavier



On Thu, Jan 21, 2016 at 3:43 PM, Cedric Doucet <cedric.doucet at inria.fr>
wrote:

>
>
> Hello,
>
> I do not manage to pass a configuration file to cmake.
>
> I type 'cmake -C ../config.cmake'
>
> where config.cmake belongs to the parent directory and contains these
> lines:
>
> set(ENABLE_DOWNLOAD True CACHE BOOL)
> set(GCC_ROOT "/local/cdoucet/gcc/4.9.2/" CACHE PATH)
>
> I get the following error message but I don't understand why:
>
> loading initial cache file ../config.cmake
> CMake Error at /local/cdoucet/simol/config.cmake:1 (set):
>   set given invalid arguments for CACHE mode.
>
>
> CMake Error at /local/cdoucet/simol/config.cmake:2 (set):
>   set given invalid arguments for CACHE mode.
>
>
> CMake Error: The source directory "/local/cdoucet/simol/config.cmake" is a
> file, not a directory.
>
>
> Do you know how to solve this problem?
>
> ----- Cedric Doucet <cedric.doucet at inria.fr> a écrit :
> >
>
> Hi Peter!
>
> Thank you very much!
> It seems to be exactly what I want. :)
> I will try to use it.
>
> Cédric
>
> ------------------------------
>
> *De: *"Petr Kmoch" <petr.kmoch at gmail.com>
> *À: *"Cedric Doucet" <cedric.doucet at inria.fr>
> *Cc: *cmake at cmake.org
> *Envoyé: *Lundi 21 Décembre 2015 13:25:53
> *Objet: *Re: [CMake] How to pass a configuration file to CMake?
>
> Hi Cedric.
>
> I have never used it myself, but I believe you're looking for CMake's
> command-line option '-C <initial-cache>':
> https://cmake.org/cmake/help/latest/manual/cmake.1.html
>
> Petr
>
> On Mon, Dec 21, 2015 at 1:12 PM, Cedric Doucet <cedric.doucet at inria.fr>
> wrote:
>
>>
>> Hello,
>>
>> I would like to know if it's possible to pass a configuration file to
>> CMake.
>> I have to pass a lot of information to CMake and the resulting command
>> line is very long to type.
>> Would it be possible to create a file containing all needed definitions
>> and pass it to CMake?
>>
>> For exemple, instead of typing
>>
>> cmake -D CMAKE_BUILD_TYPE=Debug -D CMAKE_INSTALL_PREFIX=/home/me/there -D
>> CMAKE_CXX_COMPILER=/usr/local/gcc/4.9.3/g++
>>
>> would it be possible to create a file containing
>>
>> CMAKE_BUILD_TYPE=Debug
>> CMAKE_INSTALL_PREFIX=/home/me/there
>> CMAKE_CXX_COMPILER=/usr/local/gcc/4.9.3/g++
>>
>> and pass it to CMake?
>>
>> Cédric
>>
>> --
>>
>> >
>>
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-- 
Dr Xavier BESSERON
Research associate
FSTC, University of Luxembourg
Campus Kirchberg, Office E-007
Phone: +352 46 66 44 5418
http://luxdem.uni.lu/
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